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Home >> Mercedes Benz >> 2021 >> C43 AMG 2D Convertible >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 205 Chassis - 2 Of 5 >> Testing & Repair >> Remove/Install Battery Of 48V On-Board Electrical System - AR54.10-P-0022LWO

Remove/Install Battery Of 48V On-Board Electrical System - AR54.10-P-0022LWO

Model 205, 213, 238, 253 

with code B01 (48V technology) 

G12938272Courtesy of MERCEDES-BENZ USA
G12938273Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  to skin and eyes suffering scalding from contact with hot coolant spray. Risk of poisoning  from swallowing coolant. Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
  Risk of fire  /risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning  caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death  due to voltage U >= 30 V AC and U >= 60 V DC. No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. AS54.10-Z-0001-01A 
  Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
  Notes on coolant Model 205, 253 with engine 264
with code B01 (48V technology)
Model 213 with engine 256, 264, 274, 654
with code B01 (48V technology)
Model 238 with engine 256, 264
with code B01 (48V technology)
AH20.00-N-2080-01A
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Notes on battery   AH54.10-P-0001-01A
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Commission 48 V on-board electrical system battery (G1/3). When replacing 48 V on-board electrical system battery (G1/3).  
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 205, 213, 253
with code B01 (48V technology)
AD00.00-P-2000-04B
REFER TO SELF-DIAGNOSTIC SYSTEMS   Model 238
with code B01 (48V technology)
AD00.00-P-2000-06LWO
2 Remove dust filter with air duct segment.    
REFER TO MAINTENANCE   Model 205
with code B01 (48V technology)
AP83.00-P-8381B
REFER TO MAINTENANCE   Model 213, 238, 253
with code B01 (48V technology)
AP83.00-P-8381C
3 Print out analysis sheet.    
REFER TO FORMS Analysis sheet for lithium-ion battery 48 V, form   OF54.10-P-3000-15FR
INSPECT Check     
  Risk of fire  /risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning  caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death  due to voltage U >= 30 V AC and U >= 60 V DC. No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. AS54.10-Z-0001-01A 
4 Check for potential hazards of 48 V on-board electrical system battery (G1/3). When replacing 48 V on-board electrical system battery (G1/3).  
  Notes on battery   AH54.10-P-0001-01A
    IMPORTANT In the event of smoke generation or fire, the fire department must be notified.
IMPORTANT The analysis sheet must be used to check whether the 48 V on-board electrical system battery (G1/3) presents an acute hazard.
 
5 Check housing of 48 V on-board electrical system battery (G1/3) for mechanical damage. IMPORTANT The non-visible area on the housing must be checked after removal of the 48 V on-board electrical system battery (G1/3).
IMPORTANT The analysis sheet must be used to check whether there is damage to the 48 V on-board electrical system battery (G1/3) through which electrolyte is leaking.
If electrolyte is leaking,
↓ 
Notify MPC/general representative.
 
6 Disconnect ground line from 12 V on-board electrical system battery. Model 205, 213, 253
with code B01 (48V technology)
AR54.10-P-0003LW 
    Model 238
with code B01 (48V technology)
IMPORTANT The 48 V on-board electrical system is automatically disconnected from power supply at the latest 10 s after disconnecting the ground line from the 12 V on-board electrical system battery.
AR54.10-P-0003LWO
7 Remove nut (2).    
8 Remove bolt (3)
Notes on bolted connections with self tapping screws
  AH00.00-P-0007-01SF
    TORQUE SPECIFICATION Thread rolling screw, engine compartment prefuse box to suspension strut tower *BA54.15-P-1002-01K 
9 Unclip engine compartment prefuse box (F32/3) at bottom and place to one side with electric lines attached.    
10 Detach electrical lines (6, 7, 8) and place to one side. TORQUE SPECIFICATION Nut, positive line/ground line to DC/DC converter control unit/on-board electrical system battery (48V) *BA54.10-P-1012-01A 
11 Disconnect electrical connectors (4, 5).    
12 Open caps (10) and detach electrical lines from engine compartment 48 V on-board electrical system fuse box (F153/2). TORQUE SPECIFICATION Nut, positive line/ground line to fuse box (48Volt) *BA54.15-P-1006-01K 
13 Cut cable ties (11) and remove electric lines from fuse box in 48 V on-board electrical system engine compartment (F153/2). INSTALLATION IMPORTANT : Replace cable ties (11).  
14 Disconnect coolant lines (12). SPECIAL TOOL Clamp Fig 1
15 Release and detach coolant lines (12). Model 205, 253 with engine 264
with code B01 (48V technology)
Model 213 with engine 256, 264, 274, 654
with code B01 (48V technology)
Model 238 with engine 256, 264
with code B01 (48V technology)
IMPORTANT Collect escaping coolant using suitable vessel.
AR20.20-P-7441-01RQ
16 Release and detach degassing pipe (9).   AR54.10-P-0022-01FR 
17 Unscrew screw (13) and remove with mounting rail (14). TORQUE SPECIFICATION Screw/bolt, battery mounting rail to battery frame *BA54.10-P-1001-01A 
18 Remove 48 V on-board electrical system battery (G1/3) with DC/DC converter control unit (N83/1) and fuse box in 48V on-board electrical system engine compartment (F153/2).    
19 Disconnect DC/DC converter control unit (N83/1) from 48V on-board electrical system battery (G1/3). When replacing 48 V on-board electrical system battery (G1/3).  
      AR54.10-P-1351LWO
20 Unscrew screws (15) and disconnect engine compartment 48 V on-board electrical system fuse box (F153/2) from 48 V on-board electrical system battery (G1/3). When replacing 48 V on-board electrical system battery (G1/3).  
21 Install in the reverse order.    
22 Pour in coolant and bleed engine cooling system. Model 213 with engine 264
with code B01 (48V technology)
Model 238 with engine 264
with code B01 (48V technology)
AR20.00-P-1142MRH
    Model 213 with engine 256.9
with code B01 (48V technology)
Model 238 with engine 256.9
with code B01 (48V technology)
AR20.00-P-1142MSA
    Model 213 with engine 274, 654
with code B01 (48V technology)
AR20.00-P-1142OLC
    Model 205, 253 with engine 264
with code B01 (48V technology)
AR20.00-P-1142MRI
BATTERY

Number Designation Model 205 Model 213
BA54.10-P-1001-01A Screw/bolt, battery mounting rail to battery frame Nm 23 23
BATTERY

Number Designation Model 238 Model 253
BA54.10-P-1001-01A Screw/bolt, battery mounting rail to battery frame Nm 23 23
BATTERY

Number Designation Model 205 Model 213
BA54.10-P-1012-01A Nut, positive line/ground line to DC/DC converter control unit/on-board electrical system battery (48V) M8 Nm 16 16
BATTERY

Number Designation Model 238 Model 253
BA54.10-P-1012-01A Nut, positive line/ground line to DC/DC converter control unit/on-board electrical system battery (48V) M8 Nm 16 16
FUSE AND RELAY BOX

Number Designation Model 205 Model 213
BA54.15-P-1002-01K Thread rolling screw, engine compartment prefuse box to suspension strut tower M10 Nm 35 35
FUSE AND RELAY BOX

Number Designation Model 238 Model 253
BA54.15-P-1002-01K Thread rolling screw, engine compartment prefuse box to suspension strut tower M10 Nm 35 35
FUSE AND RELAY BOX

Number Designation Model 205 Model 213
BA54.15-P-1006-01K Nut, positive line/ground line to fuse box (48Volt) M8 Nm 16 16
FUSE AND RELAY BOX

Number Designation Model 238 Model 253
BA54.15-P-1006-01K Nut, positive line/ground line to fuse box (48Volt) M8 Nm 16 16
Fig 1: Identifying Clamp (000 589 40 37 00)
G12938274Courtesy of MERCEDES-BENZ USA